【English Communication I】Mastering the Passive Voice!
Hello, everyone! Today, we’re going to dive into a super important topic in English: the "passive voice."
The term "passive voice" might sound a little intimidating, but it’s actually an expression we use all the time in everyday conversation. Think of phrases like "This book was written by Natsume Soseki" or "This window was broken by someone."
Mastering this chapter will really expand your range of expression. It takes a little practice to get the hang of it, but the rules are very simple, so let's go through it step by step together!
1. What is the passive voice? (Basic concept)
In English, there are two main ways to construct a sentence:
① Active voice: A standard sentence structure where the subject "does" something.
② Passive voice: A sentence where the subject is "done to" or "receives" an action.
We use the passive voice when we want to focus on the receiver of the action rather than the person performing it.
The Basic Passive Voice Formula
The formula for the passive voice is just this:
\( \text{be verb} + \text{past participle} \)
【Pro Tip!】
Choose the correct form of the "be verb" (am, is, are, was, were) based on the subject and the tense (present or past). The "past participle" is the third form of a verb (e.g., written from write - wrote - written).
2. Steps to convert Active to Passive
Let's look at how to build the sentence in three steps.
Example: Ken uses this computer.
Step ①: Make the object (the thing receiving the action) the new subject.
This computer ...
Step ②: Change the verb to "be verb + past participle."
This computer is used ... (We use is because the subject is singular and in the present tense.)
Step ③: Put the original subject at the end using "by + person."
This computer is used by Ken.
【Summary: Remember this!】
Use by when you want to say "by someone." However, if it’s obvious who did it, or if you don't know who did it, you can sometimes leave out the by... part!
3. Watch out for tense changes
Even in the passive voice, we need to distinguish between things happening "now" and things that happened "in the past." The only part that changes is the be verb!
① Present Tense (...is done)
The room is cleaned every day.
② Past Tense (...was done)
The room was cleaned yesterday.
【Common Mistake!】
A frequent error is changing the "past participle" into a past tense form. Only the be verb changes to show tense. The "past participle" stays exactly the same, whether it's a past sentence or a future sentence!
4. Creating Negative and Interrogative sentences
Passive voice sentences follow the same rules as regular "be verb" sentences. This is a lucky bonus!
Negative (...is not done)
Just place not after the be verb!
Example: This room is not used.
Interrogative (Is it done?)
Just move the be verb to the front of the subject!
Example: Is this room used?
How to answer: Yes, it is. / No, it isn't.
5. Passive voice with modal verbs (can, will, etc.)
When you want to say "it might be done" or "it will be done," we borrow the power of modal verbs.
Formula: \( \text{modal verb} + \text{be (base form)} + \text{past participle} \)
Example: The meeting will be held tomorrow.
*Since a verb must always follow a modal in its base form, we always use be.
6. Passive voice expressions without "by" (Key phrases!)
Some passive voice expressions use prepositions other than by. These show up on tests frequently, so try to memorize them as a set!
- be surprised at ~
- be interested in ~
- be known to ~
- be covered with ~
- be filled with ~
【Fun Fact】
These often express emotions. They use the passive voice because they convey the nuance of "being made to feel a certain way (due to a cause)."
★ Key Takeaways
1. The foundation of the passive voice is \( \text{be verb} + \text{past participle} \).
2. It means "to be done" and is used when focusing on the receiver of the action.
3. Use was / were for the past, and add not after the be verb for negatives.
4. If there’s a modal verb (like will), use will be + past participle.
5. Memorizing set phrases that don't use by is the quickest way to ace them!
At first, choosing the right be verb or remembering the past participle form might be confusing. But as you read the examples aloud over and over, you'll naturally start to feel, "Oh, this should be is" or "This is written." You've got this—just keep at it! I'm cheering for you!